A filling body is inserted together with a loose bundle of guide tubes during installation in an existing protective duct, thus enlarging the bundle diameter and making crossing of the guide tubes impossible. The top and bottom surfaces of the insulating film have a top wiring pattern layer and a bottom wiring pattern layer, respectively. The flexible material has integral fibers and at least a portion of the material allows the transmission of at least infrared and visible wavelengths of electromagnetic radiation. A controller synchronously controls the state of the tunable light emitters and the spatial light modulator pixels, wherein the spatial light modulator pixels are controlled responsive to first-eye image data when the tunable light emitters are in the first state and are controlled responsive to second-eye image data when the tunable light emitters are in the second state.